CN1267884A - Optical information recording media and optical information recording method - Google Patents
Optical information recording media and optical information recording method Download PDFInfo
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- CN1267884A CN1267884A CN00103612A CN00103612A CN1267884A CN 1267884 A CN1267884 A CN 1267884A CN 00103612 A CN00103612 A CN 00103612A CN 00103612 A CN00103612 A CN 00103612A CN 1267884 A CN1267884 A CN 1267884A
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0045—Recording
- G11B7/00455—Recording involving reflectivity, absorption or colour changes
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/244—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only
- G11B7/246—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes
- G11B7/247—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes methine or polymethine dyes
- G11B7/2472—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes methine or polymethine dyes cyanine
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
- G11B7/2531—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising glass
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
- G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
- G11B7/2534—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins polycarbonates [PC]
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/254—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers
- G11B7/2542—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers consisting essentially of organic resins
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/258—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers
- G11B7/259—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers based on silver
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- Optical Record Carriers And Manufacture Thereof (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Abstract
The present invention provides a medium for recording optical information that allow the recording sensitivity to be increased, and particularly a prescribed recording sensitivity to be maintained together with reflectivity and other playback characteristics during high-speed recording, by employing the temperature dependence of the recording sensitivity of the light-absorbing layer instead of the light attenuation coefficient of the light-absorbing layer, and selecting a material which is prone to increased absorption of a laser beam at high temperatures during recording. A distinctive feature is that the absorbance or recording sensitivity of the dye material film used in the medium for recording optical information that has a writable structure is dependent on the temperature. Specifically, it was found that the absorption spectrum of the dye material varies at high temperatures, and a relation A2/A1 >= 1.30 was established. In this relation, A1 (Abs) is an absorbance of the light-absorbing layer at a wavelength of recording light under room-temperature conditions, T (DEG C) is a pyrolysis temperature of the light-absorbing layer, and A2 (Abs) is an absorbance at a wavelength of recording light under T (DEG C), T-50 (DEG C) conditions.
Description
The present invention relates to optical information recording media, particularly on light-transmitting substrate, have light absorbing zone and reflection layer and writeable optical information recording media at least.
But the optical recording media that in the past had write structure (that is, CD-R), is generally the characteristic of corresponding high-speed record, except that at the reproducing characteristics of CD behind the record, for the record sensitivity, that is, the registering capacity of the most suitable record also needs is decreased.
And, need absorbance with light absorbing zone with the optical information recording media that used that registering capacity reduces in the past more, being about to optical attenuation is that number increases, or increases the film thickness of light absorbing zone, and the absorbance that all produces because of pigmented film is increased to improve the record sensitivity.
But the record sensitivity that said method improved has certain boundary.
Promptly, orange handbook (Orange book) regulation according to the CD-R specification, maximum reflectivity Rtop is required to be more than the 65%R, so pigmented film can cause the reduction of reflectivity on the contrary when increasing to a certain amount of absorbing amount, and makes reflectivity can't close specified content in orange handbook.
Promptly, in the past for the method that promotes the record sensitivity, generally be so that its optical attenuation to pigment is to count to carry out in proportional mode, for promoting the record sensitivity, though with the optical attenuation in the optical maser wavelength zone of pigment material is that number increases and get final product, generation simultaneously can not make reflectivity reach the problem of standard simultaneously.Optical attenuation is several, if when the light absorption in the dye material (absorbance) carried out in the ratio mode, the ratio regular meeting of the light quantity that absorbs in the pigmented film in the time of can producing optical attenuation and be number and increase increases, but reflectivity such as can reduce at problem.
Therefore, using optical attenuation is when counting the control method that waits in the past, is not easy to make reflectivity and record sensitivity fully to satisfy the specification of CD-R the utmost point, still, particularly when high-speed record, must have this two important document of writing speed and reflectivity concurrently.
The present invention is in view of above problem, and a kind of optical information recording media that also can guarantee reproducing characteristics such as reflectivity and certain record sensitivity in high-speed record is provided.
Again, the present invention provides a kind of optical information recording media again, is to use the material of the absorption that also can increase laser under the high temperature that is selected from when record to improve the sensitivity of record even wherein be used in the dye material of CD-R.
Again, the present invention also provides a kind of optical information recording media, its except that reproducing characteristics can be kept identical with the user of institute in the past, unfavorable be several with optical attenuation, and the temperature dependency of utilizing the record sensitivity in light absorbing zone is to improve the record sensitivity.
The present invention is a kind of optical information recording media of novelty, be that relevant a kind of utilization is used for CD-R, or has an absorbance of the dye material film of available optical information recording media (being DVD-R) than its structure that writes for the laser of shortwave, promptly write down the temperature dependency of sensitivity, particularly, be that variation by the extinction spectrum of the dye material under the high temperature begins, to select a kind of mode that under high temperature, also improves the material of laser absorption degree easily to write down sensitivity to improve it, its be contain a kind of substrate that has light transmission and form pre-groove with, be arranged on this substrate comprise by the light absorbing zone of the light absorption material that pigment constituted that can absorb recording light such as laser with, but be arranged at the reflection layer of the reflector laser on this light absorbing zone.Last note light absorbing zone can be shone and in the optical information recording media of recorded information by the note recording light, the heat decomposition temperature that the absorbance log that goes up note record light wavelength under the room temperature of last note light absorbing zone is set at A1 (Abs), light absorbing zone be T (℃), T-50 (℃) in the absorbance of record light wavelength when being A2 (Abs), satisfy A2/A1 〉=1.30.
If in the time of will being set at N (Abs/ ℃) to the absorbance log rate of change of going up note record light wavelength under the temperature of room temperature till heat decomposition temperature of last note light absorbing zone, satisfy N 〉=2.0 * 10
-4
When being set at dav (nm) as if the average film thickness that will go up the note light absorption layer film, 40≤dav≤100,0.15≤A1≤0.25.
Below, the present invention is made more specific description.
Fig. 1 represents the amplification cut-away view of optical information recording media 1 of the present invention; optical information recording media 1, the substrate 2 with light transmission is formed at the light absorbing zone 3 (recording layer) on the substrate 2; be formed at the reflection layer 4 on the light absorbing zone 3, be formed at the protective seam 5 on the reflection layer 4.
Form spiral helicine pre-groove on the substrate 2.The left and right sides of default recessed layer 6, the part for beyond the pre-groove then is provided with par 7.
Again, substrate 2 is to interconnect with the 1st stratum boundary 8 with light absorbing zone 3.Light absorbing zone 3 is to be connected with the 2nd stratum boundary 9 with reflection layer 4.Reflection layer 4 is to be connected with the 3rd stratum boundary with protective seam 5.
As shown in the figure, when optical information recording media 1 was subjected to recording light (record laser) L1 irradiation, the pigment in the light absorbing zone 3 then generated heat because of the energy that absorbs this laser L1, and makes substrate 2 sides produce shrinkage pool portion 11 because of thermal deformation.Again, in the part of record, the pigment in the light absorbing zone 3 decomposes because of producing heating, and the refractive index of shrinkage pool portion 11 is changed.
The irradiation that light (reset and use light) L2 is reset in this shrinkage pool portion 11, make the shrinkage pool portion 11 of substrate 2 produce thermal deformation, and the refraction effect that causes light because of the part of shrinkage pool portion 11 and non-shrinkage pool part (par 7) because of the different optical phase differential that produce of refractive index to be obtaining the shrinkage pool contrast, and uses the data of reading.
Present inventors are in the above-mentioned optical information recording media 1, and the temperature dependency of absorbance that is used for the dye material film of CD-R or DVD-R is studied.That is, the pigment in the light absorbing zone 3, different according to the difference of temperature for the absorbance in the optical maser wavelength, it has the tendency of high light absorbance log under high-temperature.
Fig. 2 represents the relation of optical maser wavelength and absorbance, the extinction spectrum of (during room temperature) when solid line is low temperature among the figure, the extinction spectrum when dotted line (dotted line) then is high temperature.
The scope of the extinction spectrum of pigmented film itself is extremely wide as shown in Figure 2, its reason is known may to be the mutual intermolecular force of pigment molecular, and the interaction that the hydrogen adhesion produced etc., very swash under the acute high temperature in molecular vibration, this mutual effect changes, and the extinction spectrum of pigmented film is changed.
As shown in the figure, this is according to the bigger dye material of temperature dependency, if when record uses the laser radiation that has than macro-energy during signal, pigmented film is heated up, and being produced greatly to the extinction spectrum between ultraviolet ray, the visible region changes (absorbance at room temperature reaches record and can produce reverse under high temperature).
The temperature dependency of this absorption spectrum is the molecular structure that relies on pigment, when for example using benzene a pair of horses going side by side indoles benzene a pair of horses going side by side dicarbocyanine, because of side chain in the molecule is bigger, so for the directivity material that desire reduces associativity, its effect is fallen more remarkable.When adjuvants such as adding stabilization agent, also can make extinction spectrum produce significant the variation again.
Particularly, can improve the sensitivity of record if close when the absorbance log of the long wavelength side of the absorption spectrum of recording laser wavelength increases.
This kind produces under the condition of high temperature of heat, because of the absorption that can make laser can improve the energy that can reduce recording laser in the Stimulated Light irradiation because of the material that dependence on temperature increases the variation tendency of absorption spectrum.
That is, be to increase high temperature light absorption energy down, the temperature when writing down can increase the absorbance of pigmented film with time more than 200 ℃, and the laser energy Yin Wendu when generally reading is lower, so the difficult increase of the absorbing amount of pigmented film.
Among the present invention, if absorbance that will the wavelength of recording light L1 in the room temperature of light absorbing zone shown in Figure 23 be set at the heat decomposition temperature of A1 (Abs), light absorbing zone 3 be T (℃), T-50 (℃) in write down light wavelength absorbance when being A2 (Abs), be good to close in the condition of A2/A1 〉=1.30.Again, if do not consider high temperature heat decomposition temperature T (℃) during following absorbance, and when doing definition with the absorbance of (T-50) ℃, the absorbance in the time of then itself then can't measuring the pigment decomposition to heat decomposition temperature T ℃ is the absorbance that can measure (T-50) ℃ because of it.
A2/A1 then is difficult to obtain sufficient record sensitivity and reflectivity if be lower than at 1.30 o'clock.
In the light absorbing zone 3, when the absorbance rate of change under the recording light L1 wavelength of the temperature of room temperature till pyrolysis temperature T is N (Abs/ ℃), with N 〉=2.0 * 10
-4For good.
N is if be lower than 2.0 * 10
-4When (Abs/ ℃), then fail to be write down fully sensitivity and reflectivity.
Again, when the average film thickness of light absorbing zone 3 was set at dav (nm), with 40≤dav≤100, and 0.15≤A1≤0.25 was good.
Dav is during less than 40nm, and light absorbing zone will be difficult for producing sufficient optical change during record, and be difficult to guarantee degree of modified tone (shrinkage pool contrast) fully.
If dav is when being higher than 100nm, and the heat storage amount of light absorbing zone is excessive during because of record, and the shrinkage pool that can produce the tear type changes, and it is disorderly that the playback signal is produced.
A1 then failed to be write down fully sensitivity less than 0.15 o'clock.
A1 was greater than 0.25 o'clock, and playback time then fails to obtain sufficient reflectivity.
Again, the ratio A2/A1 of above-mentioned absorbance, absorbance rate of change N, numerical value such as average film thickness dav are surpassing the situation that is produced beyond institute's fixed number value, can be more remarkable when high-speed record.
In addition, in the optical information recording media of the present invention, light absorbing zone can make necessary laser energy reduce when high temperature writes down, and making the playback time absorbance is general level, can guarantee sufficient reflectivity and can not produce harmful effect to reflectivity.
That is, when increasing, when recording laser shines, can produce the effect that multiplies each other that absorbance-temperature rises, and can under low record energy, form shrinkage pool as if absorbance with the optical maser wavelength under the high temperature.
Again, it is less that playback time Yin Wendu goes up lifting, can guarantee sufficient reflectivity so light absorption is less.
Fig. 1 represents the amplification cut-away view of an example in the optical information recording media 1 of the present invention.
Fig. 2 represents the relation of optical maser wavelength and absorbance.
Fig. 3 represents the structural formula of the anthocyanidin that conduct record pigment uses among embodiment 1 and the embodiment 2.
Fig. 4 represents the structural formula of the anthocyanidin that conduct record pigment uses among the embodiment 3.
Fig. 5 represents the structural formula of the anthocyanidin that conduct record pigment uses among the embodiment 4.
Fig. 6 represents the structural formula of the anthocyanidin that conduct record pigment uses in comparative example 1 and the comparative example 2.
Fig. 7 represents the temperature dependency of absorbance in embodiment 1 and the comparative example 1.
[explanation of primary clustering label]
1 optical information recording media (Fig. 1)
The substrate of 2 light transmissions
3 light absorbing zones (recording layer)
4 reflection layers
5 protective seams
6 spiral helicine default recessed layers
7 pars
The 1st stratum boundary that 8 substrates 2 and light absorbing zone are 3
The 2nd stratum boundary that 9 light absorbing zones 3 and reflection layer are 4
The 3rd stratum boundary that 10 reflection layers 4 and protective seam are 5
11 shrinkage pool portions
L1 recording light (record laser)
L2 playback light (reset and use laser)
Below, with reference to Fig. 3～Fig. 7 embodiment 14 and comparative example 12 are described.
[embodiment 1]
Use jet forming method to make an external diameter 120mm, internal diameter 15mm, the polycarbonate system of thickness 1.2mm, and have pre-groove hole 1.6 μ m on the surface, the wide 0.55 μ m of groove, the substrate 2 of the spiral fashion pre-groove 6 of the dark 160nm of groove.
The pigment of record be to use anthocyanidin 86 weight portions with the described structure of Fig. 3 with, N as the aluminium salt of light stabilizer, two (4-dibutyl aniline base)-aluminium perchlorinate thing 14 weight portions of N-, the mode that rises with 25g/ is dissolved in the methyl Cellosolve, it is coated on the note substrate 2 with method of spin coating, to form the light absorbing zone 3 of thickness dav95nm.
The absorbance A 1 of the recording laser wavelength (780nm) of this light absorbing zone 3 under 25 ℃ of temperature (room temperature) is 0.24Abs.
Heat decomposition temperature T under the poor formula heat of this light absorbing zone 3 is analyzed is 242 ℃.Again, when using method of spin coating according to the film thickness coating absorption layer 3 identical with last note on glass substrate, it is in 25 ℃ of absorbance A 1 down of temperature, the absorbance A 2 under reach (T-50) ℃ 192 ℃ respectively do for oneself 0.24Abs, 0.35Abs and A2/A1=1.46.
Again, the absorbance rate of change N of the optical maser wavelength of room temperature (25 ℃) till the decomposition temperature T (242 ℃) is 6.6 * 10
-4(Abs/ ℃).
To form silver (Ag) the system reflection layer 4 that thickness is 100nm with sputtering method on the coated substrate 2 that pigmented film arranged of last note.
Thereafter (big Japanese ink chemical industrial company system SD-211), forms the protective seam 5 of thickness 10 μ m with ultraviolet ray irradiation back, and makes optical information recording media 1 these reflection layer 4 tops to be coated with uv-hardening resin with method of spin coating.
The optical information recording media 1 that makes of mode according to this, (mountain leaf corporate system CD-R100), is carried out record with 4 times of speed of linear velocity 5.6m/s to use the laser log machine of wavelength 787nm.
This moment, the most suitable energy as record was 12.6mW, and it is for being an extremely low numerical value on the long-time continuous recording unchangeably.Again, the reflectivity Rtop in eyelet type (eyepattern) the signal specification is 66% at this moment, and the specification of the orange handbook of note before satisfying.
[embodiment 2]
Use jet forming method to make an external diameter 120mm, internal diameter 15mm, the polycarbonate system of thickness 1.2mm, and have recess hole 1.6 μ m on the surface, the wide 0.55 μ m of groove, the substrate 2 of the spiral fashion pre-groove 6 of the dark 160nm of groove.
The pigment of record be to use anthocyanidin 86 weight portions with the described structure of Fig. 3 with, N as the aluminium salt of light stabilizer, two (4-dibutyl aniline base)-aluminium perchlorinate thing 14 weight portions of N-, the mode that rises with 25g/ is dissolved in the methyl Cellosolve, it is coated on the note substrate 2 with method of spin coating, to form the light absorbing zone 3 of thickness dav42nm.
The absorbance A 1 of the recording laser wavelength (780nm) of this light absorbing zone 3 under 25 ℃ of temperature (room temperature) is 0.15Abs.
Heat decomposition temperature T under the poor formula heat of this light absorbing zone 3 is analyzed is 242 ℃.Again, when using method of spin coating according to the film thickness coating absorption layer 3 identical with last note on glass substrate, it is in 25 ℃ of absorbance A 1 down of temperature, the absorbance A 2 under reach (T-50) ℃ 192 ℃ respectively do for oneself 0.15Abs, 0.20Abs and A2/A1=1.33.
Again, the absorbance rate of change N of the optical maser wavelength of room temperature (25 ℃) till the decomposition temperature T (242 ℃) is 2.9 * 10
-4(Abs/ ℃).
To form silver (Ag) the system reflection layer 4 that thickness is 100nm with sputtering method on the coated substrate 2 that pigmented film arranged of last note.
Thereafter (big Japanese ink chemical industrial company system SD-211), forms the protective seam 5 of thickness 10 μ m with ultraviolet ray irradiation back, and makes optical information recording media 1 these reflection layer 4 tops to be coated with uv-hardening resin with method of spin coating.
The optical information recording media 1 that makes of mode according to this, (mountain leaf corporate system CD-R100), is carried out record with 4 times of speed of linear velocity 5.6m/s to use the laser log machine of wavelength 787nm.
This moment, the most suitable energy as record was 14.2mW, and it is for being an extremely low numerical value on the long-time continuous recording unchangeably.Again, the reflectivity Rtop in eyelet type (eyepattern) the signal specification is 72% at this moment, and the specification of the orange handbook of note before satisfying.
[embodiment 3]
Use jet forming method to make an external diameter 120mm, internal diameter 15mm, the polycarbonate system of thickness 1.2mm, and have pre-groove hole 1.6 μ m on the surface, the wide 0.52 μ m of groove, the substrate 2 of the spiral fashion pre-groove 6 of the dark 100nm of groove.
The pigment of record is to use anthocyanidin 100 weight portions with the described structure of Fig. 4, and the mode that rises with 20g/ is dissolved in the methyl Cellosolve, it is coated on the note substrate 2 with method of spin coating, to form the light absorbing zone 3 of thickness dav60nm.
The absorbance A 1 of the recording laser wavelength (780nm) of this light absorbing zone 3 under 25 ℃ of temperature (room temperature) is 0.18Abs.
Heat decomposition temperature T under the poor formula heat of this light absorbing zone 3 is analyzed is 223 ℃.Again, when using method of spin coating according to the film thickness coating absorption layer 3 identical with last note on glass substrate, it is in 25 ℃ of absorbance A 1 down of temperature, the absorbance A 2 under reach (T-50) ℃ 172 ℃ respectively do for oneself 0.18Abs, 0.36Abs and A2/A1=2.0.
Again, the absorbance rate of change N of the optical maser wavelength of room temperature (25 ℃) till the decomposition temperature T (242 ℃) is 1.1 * 10
-3(Abs/ ℃).
To form silver (Ag) the system reflection layer 4 that thickness is 100nm with sputtering method on the coated substrate 2 that pigmented film arranged of last note.
Thereafter (big Japanese ink chemical industrial company system SD-211), forms the protective seam 5 of thickness 10 μ m with ultraviolet ray irradiation back, and makes optical information recording media 1 these reflection layer 4 tops to be coated with uv-hardening resin with method of spin coating.
The optical information recording media 1 that makes of mode according to this, (mountain leaf corporate system CD-R100), is carried out record with 4 times of speed of linear velocity 5.6m/s to use the laser log machine of wavelength 787nm.
This moment, the most suitable energy as record was 11.6mW, and it is for being an extremely low numerical value on the long-time continuous recording unchangeably.Again, the reflectivity Rtop in the eyelet type signal specification is 68% at this moment, and the specification of the orange handbook of note before satisfying.
[embodiment 4]
Use jet forming method to make one in external diameter 120mm, internal diameter 15mm, the polycarbonate system of thickness 1.2mm, and have pre-groove hole 1.6 μ m on the surface, the wide 0.55 μ m of groove, the substrate 2 of the spiral fashion pre-groove 6 of the dark 160nm of groove.
Use jet forming method to make one in external diameter 120mm, internal diameter 15mm, the polycarbonate system of thickness 0.6mm, and have pre-groove hole 0.8 μ m on the surface, the wide 0.40 μ m of groove, the substrate 2 of the spiral helicine pre-groove 6 of the dark 100nm of groove (DVD-R uses).
The pigment of record is to use anthocyanidin 100 weight portions with the described structure of Fig. 5, and the mode that rises with 25g/ is dissolved in the methyl Cellosolve, it is coated on the note substrate 2 with method of spin coating, to form the light absorbing zone 3 of thickness dav60nm.
The absorbance A 1 of the recording laser wavelength (635nm) of this light absorbing zone 3 under 25 ℃ of temperature (room temperature) is 0.15Abs.
Heat decomposition temperature T under the poor formula heat of this light absorbing zone 3 is analyzed is 295 ℃.Again, when using method of spin coating according to the film thickness coating absorption layer 3 identical with last note on glass substrate, it is in 25 ℃ of absorbance A 1 down of temperature, the absorbance A 2 under reach (T-50) ℃ 145 ℃ respectively do for oneself 0.15Abs, 0.22Abs and A2/A1=1.46.
Again, the absorbance rate of change N of the optical maser wavelength of room temperature (25 ℃) till the decomposition temperature T (242 ℃) is 3.2 * 10
-4(Abs/ ℃).
(on the light absorbing zone 3) on the coated substrate 2 that pigmented film arranged of last note formed silver (Ag) the system reflection layer 4 that thickness is 100nm with sputtering method.
These reflection layer 4 tops are coated with uv-hardening resin with method of spin coating thereafter, and with external diameter 120mm, internal diameter 15mm, the polycarbonate system support substrate of thickness 0.6mm is overlapping, in the mode of ultraviolet ray irradiation two substrates is cohered this support substrate.
The optical information recording media 1 that makes of mode uses wavelength 640nm according to this, and the laser log machine of actual maximum output 20mW carries out record with linear velocity 7.0m/s.
This moment, the most suitable energy as record was 17.0mW, and it is for being an extremely low numerical value on the long-time continuous recording unchangeably.Again, the reflectivity Rtop in the eyelet type signal specification is 54% at this moment, and is the degree that can fully reset.
[comparative example 1]
Use jet forming method to make an external diameter 120mm, internal diameter 15mm, the polycarbonate system of thickness 1.2mm, and have pre-groove hole 1.6 μ m on the surface, the wide 0.55 μ m of groove, the substrate 2 of the spiral fashion pre-groove 6 of the dark 160nm of groove.
The pigment of record be to use anthocyanidin 86 weight portions with the described structure of Fig. 6 with, N as the aluminium salt of light stabilizer, two (4-dibutyl aniline base)-aluminium perchlorinate thing 14 weight portions of N-, the mode that rises with 25g/ is dissolved in the methyl Cellosolve, it is coated on the note substrate 2 with method of spin coating, to form the light absorbing zone 3 of thickness dav65nm.
The absorbance A 1 of the recording laser wavelength (780nm) of this light absorbing zone 3 under 25 ℃ of temperature (room temperature) is 0.18Abs.
Heat decomposition temperature T under the poor formula heat of this light absorbing zone 3 is analyzed is 296 ℃.Again, when using method of spin coating according to the film thickness coating absorption layer 3 identical with last note on glass substrate, it is in 25 ℃ of absorbance A 1 down of temperature, the absorbance A 2 under reach (T-50) ℃ 246 ℃ respectively do for oneself 0.18Abs, 0.22Abs and A2/A1=1.22.
Again, the absorbance rate of change N of the optical maser wavelength of room temperature (25 ℃) till the decomposition temperature T (296 ℃) is 1.9 * 10
-4(Abs/ ℃).
(on the light absorbing zone 3) on the coated substrate 2 that pigmented film arranged of last note formed silver (Ag) the system reflection layer 4 that thickness is 100nm with sputtering method.
Thereafter (big Japanese ink chemical industrial company system SD-211), forms the protective seam 5 of thickness 10 μ m with ultraviolet ray irradiation back, and makes optical information recording media 1 these reflection layer 4 tops to be coated with uv-hardening resin with method of spin coating.
The optical information recording media 1 that makes of mode according to this, (mountain leaf corporate system CD-R100), is carried out record with 4 times of speed of linear velocity 5.6m/s to use the laser log machine of wavelength 787nm.
This moment, the most suitable energy as record was 16.4mW, and it is used for being on the long-time continuous recording unchangeably too high numerical value.
[comparative example 2]
Use jet forming method to make an external diameter 120mm, internal diameter 15mm, the polycarbonate system of thickness 1.2mm, and have pre-groove hole 1.6 μ m on the surface, the wide 0.55 μ m of groove, the substrate 2 of the spiral fashion pre-groove 6 of the dark 160nm of groove.
The pigment of record is to use anthocyanidin 86 weight portions with the described structure of Fig. 6, and the mode that rises with 20g/ is dissolved in the methyl Cellosolve, it is coated on the note substrate 2 with method of spin coating, to form the light absorbing zone 3 of thickness dav50nm.
The absorbance A 1 of the recording laser wavelength (780nm) of this light absorbing zone 3 under 25 ℃ of temperature (room temperature) is 0.17Abs.
Heat decomposition temperature T under the poor formula heat of this light absorbing zone 3 is analyzed is 315 ℃.Again, when using method of spin coating according to the film thickness coating absorption layer 3 identical with last note on glass substrate, it is in 25 ℃ of absorbance A 1 down of temperature, the absorbance A 2 under reach (T-50) ℃ 265 ℃ respectively do for oneself 0.17Abs, 0.22Abs and A2/A1=1.29.
Again, the absorbance rate of change N of the optical maser wavelength of room temperature (25 ℃) till the decomposition temperature T (315 ℃) is 1.9 * 10
-4(Abs/ ℃).
(on the light absorbing zone 3) on the coated substrate 2 that pigmented film arranged of last note formed silver (Ag) the system reflection layer 4 that thickness is 100nm with sputtering method.
Thereafter (big Japanese ink chemical industrial company system SD-211), forms the protective seam 5 of thickness 10 μ m with ultraviolet ray irradiation back, and makes optical information recording media 1 these reflection layer 4 tops to be coated with uv-hardening resin with method of spin coating.
The optical information recording media 1 that makes of mode according to this, (mountain leaf corporate system CD-R100), is carried out record with 4 times of speed of linear velocity 5.6m/s to use the laser log machine of wavelength 787nm.
This moment, the most suitable energy as record was 16.0mW, and it is used for being on the long-time continuous recording unchangeably too high numerical value.
Again, Fig. 7 is the temperature dependent graph of a relation that is the foregoing description 1 and the absorbance of comparative example 1, its curve, i.e. absorbance rate of change N (Abs/ ℃), as the various embodiments described above 14 with shown in the comparative example 1,2 as, its record sensitivity has heterodyne is significantly arranged.
As implied above, when the absorbance ratio of the present invention with high temperature the time and under the room temperature is set in certain limit, can guarantee the sufficient reflectivity of playback time, and promote the sensitivity of record.
Claims (4)
1, a kind of optical information recording media comprises
Substrate with light transmission and formation pre-groove,
Be arranged on the light absorbing zone of comprising on this substrate by the light absorption material that pigment constituted that can absorb recording light such as laser,
But be arranged on the reflection layer of the reflector laser on this light absorbing zone, it is characterized in that,
By means of described recording light being radiated in the optical information recording media of recorded information on the described light absorbing zone, the heat decomposition temperature that the absorbance log of the described record light wavelength under the room temperature of described light absorbing zone is set at A1 (Abs), light absorbing zone be T (℃), T-50 (℃) in the absorbance of record light wavelength when being A2 (Abs), satisfy A2/A1 〉=1.30.
2, optical information recording media as claimed in claim 1 is characterized in that,
When the absorbance log rate of change of the described record light wavelength under the temperature of the room temperature of described light absorbing zone till heat decomposition temperature is set at N (Abs/ ℃), satisfy N 〉=2.0 * 10
-4
3, optical information recording media as claimed in claim 1 or 2 is characterized in that,
When the average film thickness of described light absorption layer film is set at dav (nm), satisfy 40≤dav≤100,0.15≤A1≤0.25.
4, a kind of light information recording method, for comprising the substrate that has light transmission and form pre-groove, be arranged on the light absorbing zone of comprising on this substrate by the light absorption material that pigment constituted that can absorb recording light such as laser, but be arranged on the optical information recording media that reflection layer constituted of the reflector laser on this light absorbing zone, described light information recording method is by means of described recording light is shone described light absorbing zone, recorded information is characterized in that
By means of described recording light being radiated in the optical information recording media of recorded information on the described light absorbing zone, the heat decomposition temperature that the absorbance log of the described record light wavelength under the room temperature of described light absorbing zone is set at A1 (Abs), light absorbing zone be T (℃), T-50 (℃) in the absorbance of record light wavelength when being A2 (Abs), satisfy A2/A1 〉=1.30.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP077484/1999 | 1999-03-23 | ||
| JP07748499A JP3548929B2 (en) | 1999-03-23 | 1999-03-23 | Optical information recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1267884A true CN1267884A (en) | 2000-09-27 |
| CN1161767C CN1161767C (en) | 2004-08-11 |
Family
ID=13635269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001036122A Expired - Lifetime CN1161767C (en) | 1999-03-23 | 2000-02-23 | Optical information recording media and optical information recording method |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6507547B1 (en) |
| EP (1) | EP1039455B1 (en) |
| JP (1) | JP3548929B2 (en) |
| CN (1) | CN1161767C (en) |
| DE (1) | DE60038999D1 (en) |
| ES (1) | ES2304920T3 (en) |
| HK (1) | HK1030291A1 (en) |
| TW (1) | TW472250B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311438C (en) * | 2004-04-21 | 2007-04-18 | Tdk株式会社 | Evaluating method for optical recording media adaptability of colourant components, optical recording materials and optical recording media |
| CN100444262C (en) * | 2003-06-03 | 2008-12-17 | 富士胶片株式会社 | Optical information recording method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003165272A (en) * | 2001-11-30 | 2003-06-10 | Fuji Photo Film Co Ltd | Optical information recording medium |
| JP4632101B2 (en) * | 2008-07-02 | 2011-02-16 | ソニー株式会社 | Optical information recording medium |
| JP4760922B2 (en) * | 2009-01-29 | 2011-08-31 | ソニー株式会社 | Optical information recording medium |
| JP4702643B2 (en) * | 2008-07-02 | 2011-06-15 | ソニー株式会社 | Optical information recording medium |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4547876A (en) * | 1981-08-17 | 1985-10-15 | Rca Corporation | Optical recording medium and information record and method of making same |
| US4718053A (en) * | 1984-11-09 | 1988-01-05 | Hitachi, Ltd. | Optical information apparatus and method of recording and erasing information |
| US5144552A (en) * | 1986-07-25 | 1992-09-01 | Ricoh Company, Ltd. | Optical information storage medium having grooves and pits with specific depths, respectively |
| US4860273A (en) * | 1986-07-31 | 1989-08-22 | Fuji Photo Film Co., Ltd. | Method of recording information and information recording medium employed for the same |
| US5155723A (en) * | 1988-07-30 | 1992-10-13 | Yuden Co., Ltd. Taiyo | Optical information recording method and medium |
| US5090009A (en) * | 1988-07-30 | 1992-02-18 | Taiyo Yuden Co., Ltd. | Optical information recording medium |
| JPH0827983B2 (en) | 1989-05-02 | 1996-03-21 | 太陽誘電株式会社 | Optical information recording medium |
| US5213859A (en) * | 1990-12-21 | 1993-05-25 | Tdk Corporation | Optical recording disk |
| JPH05128588A (en) * | 1991-05-16 | 1993-05-25 | Canon Inc | Optical recording medium, optical recording/reproducing method, information writing device and information record reproducer |
| EP0528512A1 (en) * | 1991-08-20 | 1993-02-24 | Pioneer Electronic Corporation | Recording medium |
| JPH0554432A (en) | 1991-08-20 | 1993-03-05 | Pioneer Electron Corp | Optical recording medium |
| EP0575176B1 (en) * | 1992-06-18 | 1998-08-19 | Canon Kabushiki Kaisha | Optical recording medium, information recording method and information reproducing method |
| US5426632A (en) * | 1993-08-23 | 1995-06-20 | Pioneer Video Corporation | Information recording medium and method for recording information to the same |
| JP2850754B2 (en) * | 1994-05-20 | 1999-01-27 | 日本電気株式会社 | Phase change optical disk |
| US5776656A (en) | 1995-07-28 | 1998-07-07 | Tdk Corporation | Optical recording medium |
| US5731054A (en) | 1996-10-16 | 1998-03-24 | Eastman Kodak Company | Mixtures of low K metallized formazan dyes with symmetrical and unsymmetrical cyanine dyes |
| US5976658A (en) | 1996-11-01 | 1999-11-02 | Taiyoyuden Co., Ltd. | Optical information recording medium |
| JPH11102538A (en) | 1997-08-01 | 1999-04-13 | Taiyo Yuden Co Ltd | Optical information recording medium |
-
1999
- 1999-03-23 JP JP07748499A patent/JP3548929B2/en not_active Expired - Lifetime
-
2000
- 2000-02-11 TW TW089102344A patent/TW472250B/en not_active IP Right Cessation
- 2000-02-23 CN CNB001036122A patent/CN1161767C/en not_active Expired - Lifetime
- 2000-03-20 US US09/531,208 patent/US6507547B1/en not_active Expired - Lifetime
- 2000-03-21 EP EP00106114A patent/EP1039455B1/en not_active Expired - Lifetime
- 2000-03-21 DE DE60038999T patent/DE60038999D1/en not_active Expired - Lifetime
- 2000-03-21 ES ES00106114T patent/ES2304920T3/en not_active Expired - Lifetime
-
2001
- 2001-01-30 HK HK01100664A patent/HK1030291A1/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100444262C (en) * | 2003-06-03 | 2008-12-17 | 富士胶片株式会社 | Optical information recording method |
| CN1311438C (en) * | 2004-04-21 | 2007-04-18 | Tdk株式会社 | Evaluating method for optical recording media adaptability of colourant components, optical recording materials and optical recording media |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1039455A3 (en) | 2002-04-10 |
| EP1039455B1 (en) | 2008-05-28 |
| TW472250B (en) | 2002-01-11 |
| HK1030291A1 (en) | 2001-04-27 |
| CN1161767C (en) | 2004-08-11 |
| ES2304920T3 (en) | 2008-11-01 |
| JP3548929B2 (en) | 2004-08-04 |
| DE60038999D1 (en) | 2008-07-10 |
| JP2000276767A (en) | 2000-10-06 |
| EP1039455A2 (en) | 2000-09-27 |
| US6507547B1 (en) | 2003-01-14 |
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